Submission #12,881

2025-01-02 20:40:35

cpp17

Accepted 50/50

83ms

4320 KiB

#include <iostream>
using namespace std;
int a[1000001];
int main()
{
    int n,m,x,y; cin>>n>>m;
    for(int i=0; i<m; i++){
        cin>>x>>y; a[x]++; a[y]--;}
    int s=a[1],c=0; bool ures;
    if(a[1]==0){ures=1; c++;}
    else ures=0;
    for(int i=2; i<n; i++){
        s=s+a[i];
        if(s!=0)ures=0;
        else if(ures==0){ures=1; c++;}}
    cout<<c;
    return 0;
}

	Sum	Test	Verdict		Time	Memory
base	50/50
		1	Accepted	0/0	1ms	320 KiB
		2	Accepted	0/0	83ms	4152 KiB
		3	Accepted	2/2	1ms	320 KiB
		4	Accepted	2/2	1ms	320 KiB
		5	Accepted	2/2	1ms	320 KiB
		6	Accepted	2/2	1ms	320 KiB
		7	Accepted	2/2	1ms	320 KiB
		8	Accepted	2/2	1ms	320 KiB
		9	Accepted	2/2	1ms	320 KiB
		10	Accepted	2/2	1ms	384 KiB
		11	Accepted	2/2	1ms	320 KiB
		12	Accepted	2/2	1ms	568 KiB
		13	Accepted	3/3	4ms	568 KiB
		14	Accepted	3/3	7ms	1124 KiB
		15	Accepted	3/3	4ms	1000 KiB
		16	Accepted	3/3	61ms	748 KiB
		17	Accepted	3/3	61ms	544 KiB
		18	Accepted	3/3	71ms	716 KiB
		19	Accepted	3/3	8ms	1848 KiB
		20	Accepted	3/3	8ms	2360 KiB
		21	Accepted	3/3	74ms	4320 KiB
		22	Accepted	3/3	76ms	4316 KiB